Machine for burnishing and setting the edges of boot and shoe soles



(Model.) 2 Sheets-Sheet 1. r

G. K.'BRADFORD & W. F. HUTOHINSON. MACHINE FOR BURNISHING AND SETTING THE EDGES 0F BOOT AND SHOE SOLE'S. No. 244,244. Patented July 12,1881.

INVENTORS WILLIAM F HUTCHINSON CHARLES K, BRADFORD ArroR N E'Y N PEIERS. Phololilhognphar. Washinglan, n. c,

(Model.) 2 Sheets-Sheet 2'. G. K. BRADFORD & W. P. HUTOHINSON. MACHINE FOR BURNISHING AND SETTING THE EDGBS OF BOOT AND SHOE- SOLES.

Patented July 12,1881.

FIG.3.

FIG. 2.

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Y E N R m T ND Y ma Qm. Hm R MB .K m n A H W@ h". warm-pm n. c.

U ITED STATES PATE T OF ICE.

CHARLES K. BRADFORD, OF LYNN FIELD, AND WILLIAM F. HUTCHIN SON OF LYNN, MASSACHUSETTS; SAID BRADFORD ASSIGNOR TO RUSSELL S. BENNETT, OF LYNN, MASSACHUSETTS.

MACHINE FOR BURNISHING AND SETTING THE EDGES F BOOT AND SHOE SOLES.

SPECIFICATION forming part of Letters Patent No. 244,244, dated July 12, 1881.

Application filed November 8, 1880. (Model) To all whom it may concern Be it known that we, CHAS. K. BRADFORD and WM. F. HUTOHINSON, residing respectively at Lynnfield, in the county of Essex and Commonwealth of Massachusetts, and at Lynn, in the county and Commonwealth aforesaid, have invented a new and useful Machine for Burnishing or Polishing the Edges of Boot or Shoe Soles, of which the following is a specification, and which is illustrated in the accompanying drawings.

Figure 1 is a side elevation of the machine. Fig. 2 is a side elevation of the tool and handle on an enlarged scale; Fig.3, a central longitudinal section of the same. Fig. 4 represents a part of Fig. 2 one-fourth way turned, and Fig. 5is a longitudinal section of the same. Fig.6is a transverse section of Fig. 2 on line xx.

, In these drawings, h represents the table.

Above it, on one side, is suspended an arm, A, to a suitable bracket. The arm is pivoted upon the shaft which carries the band-wheel g, from which power is communicated to a small pulley fixed to a short shaft, b, in the lower end 2 of the arm A, said wheel being behind the face-plate and not shown. On the front end of this short shaft, as shown, is a face-plate, c, which carries a crank-pin, e, communicating motion to the bar D, to the end of which the tool is attached. On the lower end of the bar A is a plate, m. (Shown in Fig. 1.) This plate has its lower edge formed preferably on a circle the center of which is the shaft of the wheel q. Against the lower edge of this plate a pin, E, is made to bear, said pin having free vertical motion through a hole in the table; or, instead of thepin, a plate may be used, it being desirable to have upon the bearin g-edge leather or some suitable material to cause frictional ad- 0 herence to the plate. This pinis caused to bear with force against the plate m by means of a spring,f, pressing upward againstitslower end, so that the pressure is constant and measured by the force of the spring, while the spring is 4 5 left undisturbed. The end of the spring is caught, however, by a short arm, 1, on a rockshaft in hangers on the under side ,of the table, and this shaft is rocked by a vertical arm, 2,

and push-rod 3, the end of which projects to the front and terminates at the stand of the operator, near his knee, and is provided with a knee-pad, by means of which he can at will push back the arm 2, depress the spring f, and release the plate m of pressure, either wholly or in any desired degree.

It will be understood that the tool is attached to a handle, N,which may be suspended from the ceiling by means of a suitable flexible connection.

The arm D is connected to the tool by a hook upon the end, which passes through a hole in the plate V, this disk being held in place by slipping it over the shank P of the tool and then placing the handle down upon it, as shown clearly in Fig. 3.

It will now be evident that while the plate m is held in place, (the spring f bein g made with sufficient power to accomplish that purpose,) and motion being imparted to the band-wheels, reciprocating motion will be imparted to the arm D and to the tool attached thereto in amount equal to the diameter of the circle traversed by the wrist-pin e. If, however, it be desired to reduce the throw of the tool, it is necessary only to apply to the push-rod 3 the proper amount of pressure to allow theplate m to slip upon its bearing or friction plate on the upper end of the pin E. The amount of force necessary to allow this slip will depend upon the amount of motion desired and the pressure applied upon the tool to force it against the leather, and itwill be evident that this can be adjusted at will in amount as the operator may desire. If the plate at be held constantly, then movement will be given to the burnishing-tool equal in amount to the whole throw of the reciprocating rod B; or if the pressure applied to the plate m is materially less than that of the rubbingtool, then the rubbing-tool will stand still and all the motion will be taken up by the plate m,- and it is evident that any intermediate between these two extremes may be obtained, so that the'apparatus is perfectly under the control of the operator by these simple devices.

The arm D is made up of a flexible plate,

(shown at 4,)makin g thelargerpartthereof, and connecting-rod at the ends of said plate. This plate is steadied in a guiding-post, 5, resting in a slit in the upper end thereof. This thin portion of the arm allows the tool to be moved from side to side, or to be twisted and turned at any desired angle.

The rod 42, connected to a treadle, n, is attached at its upper end to the plate V by a small hook passing through the edge of the plate, in the same manner in which the arm D is connected to the same plate. By means of this the operator can apply with his foot any desired amount of pressure upon the tool.

The devices for holding the burnishing-tool proper in place to the handle and the construction of the parts connected therewith are represented more clearly in figures on Sheet 2.

The shank P and its head R are represented clearlyinFigs.2and 3. Theheadltisrectangular, andis recessed, as shown in Fig. 3, to receive the tenons 6 of the clamping plates 7. These clamping-plates are in form as shown in Fig. 3. They are held in place at the upper ends by pins 8. The tenons 6, entering on opposite sides, as shown in the body of Fig. 3, are provided with holes, which register, when the tenons are in place, with each other and with the hole in the head of the shank. A flat pin, t, oval in cross-section, as shown in Fig. 3, is inserted in this hole, and when inserted is turned to bring its longer transverse axis into horizontalposition,wherebyit draws theclamping-plates inward. Beforethey are thusbrought inward, the tools proper are shown in section in Fig. 3 and in side elevation in Fig. 2 in proper position. These tools are recessed, as shown at 10, to receive the lower ends of the clampin g-plate,which bears against the shoulder, and thus clamp the tools securely against the side of the head. The head is slightly beveled at the end on the sides, Fig. 2, against which the tools are clamped. It is chambered,

as shown at 11, by a transverse opening made through the lower part of the head. Another opening is made longitudinally through the central part of the head from the lower end up into this transverse chamber, and through this longitudinal opening the gas is introduced by means of the flexible pipe swiveled to a boss upon the end of the head and in communication with the longitudinal opening, so that the gas is admitted into the transverse chamber. In order to supply air for the combustion of the gas, another longitudinal opening, 17, Fig. 5, is made from the lower end, parallel with the first, and extending up into the chamber. By this means the gas is consumed in the chamber without smoke and the tool kept sufficiently heated for the purpose.

It is desirable, in connection with a tool of the kind described, to use a jack which shall allow horizontal movement, or a movement in a horizontal plane, and at the same time rotary movement of the shoe. For this purpose, to facilitate the work, we have adopted the double jack, centrally pivoted and revolving in a horizontal plane, heretofore known. This jack is shown in Fig. 1. The central part or hub, 12, is pivoted so as to move in ahorizontal plane, and is provided with journals, on which are placed sleeves. (Not shown.) These sleeves are provided with pins, upon which the lasts are placed in the usual manner, and the ordinary fork for pushing against the last and clamping it upon the pin. We have provided the sleeves with slits upon one side and projections, through which projections a screw passes, whereby the sleeves may be tightened upon the journal to give any desired amount of friction to hold the sleeves in place and steady the movement. The central pivot may be provided with a friction-washer and setscrew, by means of which friction can be applied to steady in like manner the double jack in its horizontal movement, thus enabling the operator to hold the shoe steadily in position under the tool.

It will be understood that the tool is suspended by a spring, as shown in the drawings, connected to the ceiling or to any suitable standard, whereby it may be depressed at pleasure.

It is obvious that this machine is equally adapted to carry a tool for ed ge-settin g or heelburnishing.

Having thus described our invention, what we claim is- 1. In a machine for edge-setting or heelburnishin g, the combination of the oscillating hanger A, carrying in its lower end a suitable crank-shaft connected to the burnishing-tool by an arm, and the friction device, substantially as described, provided with a pressure-rod and connecting-arms for applying pressure, regulated at the will of the operator, whereby the said arm is allowed to slip and the throw of the tool modified, substantially as described.

2. The combination, with the hanger, crankshaft, and connecting-rod, of the disk m, the pin E, spring 1'', the rock-shaft provided with arms, whereby it may be depressed, and the push-rod adapted to be operated by pressure of the knee, substantially as described.

3. The combination of the swinging arm and crank-shaft, the arm D, made of thin metal and flexible laterally, the guide-posts adapted to receive said arm, and the reciprocating tool, substantially as described.

4. The combination of the tool, thehandle, and the plate V, connected to said tool and handle, as described, of the connecting-rodD, provided with a hook engaging in the hole-in the said plate, substantially as set forth.

5. The combination of the shank P, provided with the recessed head, of the clamps 7, provided with tenons and guide-pins, said tenons being adapted" to enter the head and to clamp the pulleys against the side of s the head, sub stantially as described.

6. In a machine for edgesetting or heelburnishing, the combination, with the clamps ner described, and the ventilating-opening, all and tenons, of the flattened pin, adapted by as set forth.

turning to draw inward the clamps and press CHAS. K. BRADFORD.

them upon the tool, as set forth. WILLIAM F. HUTOHINSON. 5 7. The described head provided with the Witnesses:

transverse chamber, the longitudinal perfora- WILLIAM F. DODGE,

tion, the pipe swiveled to the head in the man WILLIAM G. LAMPHIER. 

